Time as lost value in Helsinki metropolitan traffic is 0,5B€ to 1,5B€ a year (a tunnel vision)
How about if we can cut travel time from Vantaa to Helsinki City by 20min during rush hour and cut 2h ferry trip to 20min. Each day 150 000 workers commute to Helsinki metropolitan area. Each year 9M passengers take 2 hour ferry trip between Finland and Estonia. Cut in travel time would be a massive gain for us all.